February 4, 2011

Fibonacci number
In mathematics, the Fibonacci numbers are the numbers in the following integer sequence:
1, 1, 2, 3, 5, 8, 13, 21, 34,55,89,144,......

A Fibonacci spiral created by drawing arcs connecting the opposite corners of squares in the Fibonacci tiling; this one uses squares of sizes
By definition, the first two Fibonacci numbers are 0 and 1, and each subsequent number is the sum of the previous two.